INT 67H 5axxH: Allocate Standard or Raw Pages

                                                     Compatibility: EMS 4.0+ 
 Expects: AH    5aH
          AL    subfn: 00H=Allocate standard 16K pages
                           BX = desired number of standard pages
                       01H=Allocate raw pages
                           BX = desired number of raw pages
 Returns: AH    EMM status (0=successful)
          DX    EMM Handle
    Info: This is designed for use by operating systems only and may be
          disabled at any time.

          This allocates EMS memory, as with INT 67H 4300H, but can
          allocate "raw" pages (other than 16K) on the rare EMS board that
          supports that oddness.

See Also: INT 67H: EMM Services
          Extended Memory Specification (XMS)
          Interrupts and BIOS Services